switched to third party json parser, jsonpaser

bunnybot.go

@@ -64,7 +64,7 @@ func message_create (s *discordgo.Session, m *discordgo.MessageCreate) {
 
 	// awwnime (test)
 	if message == "awwnime" {
-		s.ChannelMessageSend(m.ChannelID, get_redditbooru("awwnime"))
+		s.ChannelMessageSend(m.ChannelID, get_redditbooru_image("awwnime"))
 	}
 
 	//get_redditbooru("awwnime")

func-images.go

@@ -1,17 +1,38 @@
+/*
+This contains our functions used for image searches"
+*/
+
 package main
 
 import (
 	"io/ioutil"
 	"net/http"
-	"encoding/json"
 	"time"
 	"math/rand"
+	"fmt"
+	"strconv"
+
+	"github.com/buger/jsonparser"
 )
 
-func get_redditbooru(sub string) string{
+// get the length of array for our parser
+func getArrayLen(value []byte) (int, error) {
+	ret := 0
+	arrayCallback := func(value []byte, dataType jsonparser.ValueType, offset int, err error) {
+		ret++
+	}
+
+	if _, err := jsonparser.ArrayEach(value, arrayCallback); err != nil {
+		return 0, fmt.Errorf("getArrayLen ArrayEach error: %v", err)
+	}
+	return ret, nil
+}
+
+// redditbooru request
+func get_redditbooru_image(sub string) string{
 	// create the proper url with the subreddit
 	url := "https://" + sub + ".redditbooru.com/images/?limit=1000"
-	
+
 	// set 5 second timeout on request
 	client := http.Client {
 		Timeout: 5 * time.Second,
@@ -19,26 +40,24 @@ func get_redditbooru(sub string) string{
 
 	// get the content of the page
 	resp, err := client.Get(url)
-
 	defer resp.Body.Close()
 
-	// read html as slice of bytes
+	// read response
 	out, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
 		panic(err)
 	}
 
-	// convert output to string
-	jsonout := string(out)
-
-	// convert to proper json
-	var results []map[string] interface {}
-	json.Unmarshal([]byte(jsonout), &results)
-
 	// randomize the seed
 	rand.Seed(time.Now().UnixNano())
-	
-	// select a random image to return
-	return results[rand.Intn(len(results))]["cdnUrl"].(string)
-}
 
+	// get a random number for the image
+	outlen,err := getArrayLen(out)
+	random_img := rand.Intn(outlen)
+
+	// select a random url from our list
+	img_url,err := jsonparser.GetString(out, "[" + strconv.Itoa(random_img) + "]", "cdnUrl")
+
+	return img_url
+
+}